"...if you suspend your supposition then you see that religion 'offers truth in advance of reason'"
This statement is a tautology, and also completely beside the point. It matters not whether a belief held religiously is actually true. By definition, a belief held religiously is held without regard to reason or evidence. The extent to which reason and evidence intrude is the extent to which faith is obviated.
This entire process, this way of thinking, is and should be entirely alien to science. And the anthropic principle is not science. It's not even a principle -- it's conjecture. It's not testable, not falsifiable, and it has no material effect on any scientific research, influential though it may in philosophical terms.
Your last statement is ..., it's ... no. Just, no. There is nothing alike about those two things. The constant c is, again, eminently isolatable in experiment, quite testable, and part of part of a quite falsifiable theory. The statement that following Christ has worked well for your life, even if true in whatever sense you like, is everything science is not: anecdotal, unfalsifiable, and untestable if only for the presence of millions of variables that cannot be isolated, controlled, or even known. You're conflating two completely separate things.
btw, I'm a big fan of this anthropic jazz. It is aesthetically pleasing to me, like the thought of any finely crafted machine, but it is in no way shape or form scientific.